Single-trigger mechanism for double-barrel guns.



PATENTED AUG. 27, 1907.

M. D. HOGAN. SINGLE TRIGGER MECHANISM FOR DOUBLE BARREL GUNS.

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2 SHEETSSHEET 1.

APPLICATION FILED NOV. 28. 1905.

.9 s /,H W 1.1%.. .11.. \1\ m No. 864,373. PATENTED AUG. 27, 1907. M. D. HOGAN.

SINGLE TRIGGER MECHANISM FOR DOUBLE BARREL GUNS. APPLICATION FILED ROV.28,1905.

2 SHEETSSHEET 2.

"119i muses attorney! MICHAEL D. HOGAN, OF CHEVY CHASE, MARYLAND.

SINGLE-TRIGGER MECHANISM FOR DOUBLE-BARREL GUNS.

Specification of Letters Patent.

Patented Aug. 2'7, 1907.

Application filed November 28,1905. Serial No. 289,400.

To all whom it may concern:

Be it known that 1, MICHAEL D. HOGAN, a citizen of the United States, residing at Chevy Chase, in the county of Montgomery, State of Maryland, have invented certain new and useful Improvements in Sin gle-Trigger Mechanism for Double-Barrel Guns; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to single trigger mechanism for double-barrel guns and has for its object to provide a double-barrel gun having but a single trigger for use in firing both barrels, means being provided whereby the barrels may be successively fired or whereby one barrel may be fired constantly without firing the other of the barrels.

The mechanism also includes means for reversing the order of firing of the barrels.

A further object of the invention is to provide a trigger mechanism of this character in which the firing of one barrel will not cause the firing of the other barrel.

In the accompanying drawings: Figure l is an elevation of my improved trigger mechanism as applied to a double-barrel gun, parts of the gun being broken away to show the said mechanism, the left-hand barrel having been fired. Fig. 2 is a similar view of the opposite side of a gun showing the position of the parts after the right-hand barrel has been fired. Fig. 3 is a view similar to Fig. 1 showing the right hand side of the gun and showing the mechanism in position for firing. Fig. 4 is a detail view of the trigger mechanism showing the parts in position for firing the left-hand barrel only. Fig. 5 is a detail view in perspective of the sear actuating block and, Fig. 6 is-a similar view of the detent block.

Referring to the drawings, the numeral 1 denotes the hammers of a shot-gun embodying my invention, 2 the hammer-springs and 3 the trigger of the gun.

The numerals 4 and 5 denote respectively the right and left-hand sears.

To a block 6 is pivoted a link 7 by means of an ear 8 on the said block. The said link 7 is extended forwardly of its pivot point, as shown at 9 and is arranged to abut the block 6.

A sear actuating block 10 includes a head 11 which is bifurcated as at 12 to receive the outer end of the link 7, the said link being pivoted therein, as shown at 13, adjacent the front of the head 11.

A detent block 14 includes a body portion 15 having side plates 16 and 17 extending forwardly therefrom at its sides, the said side plates being so spaced as to lie upon opposite sides of the head 11 on the block 10, the detent block 14 being pivoted to the sear actuating block 10 by means of a pin 18 which passes through the head 11 of the block 10 and the sides 16 and 17 of the detent block 14. r 7

Connected at one of its ends to a pin 19 secured to the rear face of the body portion 15 of the detent block 14 is a helical spring 20 which is connected at its other end to a standard 21 which is secured to the gun as at 22. The standard 21 is provided with a series of notches 23 upon its side edges, by means of which the tension and the position of the spring may be adjusted.

As shown in the drawings, the pin 19 is located in a plane slightly above the plane indicated by a line drawn from the pivot point 18 to the upper end of the standard 21, that the block will have a tendency through the instrumentality of the said spring toward a forward swinging movement, the block being normally held against such movement by reason of the fact that the said block has a portion normally in engagement with the plate upon which the block 6 is mounted as will be presently explained.

The sear actuating block 10 is provided at its base with a laterally extending plate 24 and with a forwardly extending lug 25 from which and the plate extension 24 projects a forwardly directed stem 26 which carries atits outer end a laterally extending lug 27, the plate 24, the lug 25, the stem 26 and its lug 27 lying in a common radius from the pivot point 13 of the block. The extension 24 has one of its ends terminating at the rear face of the block 10 and the other of its ends at a point in alinement with the front face of the said block and has its outer edge in a common plane with the outer edge of the lug 27, the said lug having its forward edge face rounded as at 28. The lug 25 also has its forward edged face rounded as at 29.

The detent block 14 is tapered upwardly from its base and the side member 16 of the block includes an car 32 which extends forwardly to the same distance as the corresponding portion of the wall 17, the remainder of the side 16 having its forward edge lying in a plane parallel to the plane in which the forward edge of the side 17 is located, but extends forwardly to a less degree than the said wall.

Upon the front face of the block 14 and located directly below the side 17 is a lug 33 which has its under edge curved upwardly and outwardly as at 34.

Each of the scars 4 and 5 is provided at its rear end with a laterally directed lug 35, the lugs being directed toward each other.

The trigger 3 is provided with an upwardly extending rib 36 which works in a slot formed in the trigger plate, the said rib 36 being disposed directly below the sear actuating block 10 and is arranged for engagement therewith when it is desired to fire the gun.

A latch plate 37 is provided with an upwardly extending lug 38 which is engaged through a slot in the trigger plate and is arranged to engage the sear actuating block 10 when the said plate'3'7 is moved rearwardly.

In Fig. 3 of the drawings, the parts of the gun are shown in position for firing, and in this position, the lug 25 of the sear actuating block 10 is directly beneath the right-hand sear 4 of the gun and the lug 35 on the left-hand sear is directly between the plate 24 and the lug 27 on the block 10. A pull upon the trigger will raise the sear actuating block 10, causing the lug 25 on the said block to engage the right-hand sear 4, thereby raising the said sear and releasing the right-hand hammer. This movement of the sear actuating block 10 serves to raise the block 14 out of contact with the plate upon which it rests and in this manner allows forward swinging of the detent block which by reason of the respective locations of the pivot points of the sear actuating block and the detent block, will result also in a forward swinging movement of the sear-actuating block. At the time of this movement the springv 20 will forwardly rock the detent block, and for an instant hold the sear actuating block in raised position and with its lug 24 directly behind the lug 35 on the left hand sear, which will of course prevent the lug 24 from being brought into position beneath the lug on. the sear. As stated however, the detent block assumes this position for but a moment, which is a sufficient length of time to prevent the usual involuntary pull upon the trigger from actuating the said sear. As amatter. of fact the involuntary release of the trigger during the recoil of the gun is of such short duration that it is impossible for the detent block to move rearwardly into operative position. As soon, however, as the trigger is released, the spring-again exerts its force toswing the sear actuating block forwardly to bring its lug 24- beneath the lug upon the left hand sear, so that the left hand barrel may be fired. After the recoil from the firing of the right-hand barrel, the spring 20.serves to swing the de tent block rearwardly out of engagement with the lug 24 upon the sear actuating block as shown in Fig. 1, leaving the lug 24 beneath the said sear. A second pull upon the trigger will raise the sear actuating block 10 and consequently the left-hand sear, thereby releasing the left-hand hammer to fire its respective barrel. Should it be desired to fire the lefthand barrel only, or should it be desired to fire the left-hand barrel before the right-hand barrel, the latch-plate 31 is moved rearwardly causing its lug 38 to swing the sear actuating block 10 rearwardly thereby bringing the lug 27 upon the stem 26 0f the said block beneath the lug 35 on the said sear, it being understood that the block can in no way contact with the right-hand sear. If, after firing the left-hand barrel, it is desired to fire the right-hand barrel, the latch plate 37 is moved forwardly permitting the sear actuating block to swing in a corresponding direction in position for actuating the right-hand sear to fire the right-hand barrel.

In brief, the operation of the mechanism is as follows: The detent block is raised from the trigger plate by the first pull upon the trigger of the gun and is swung par; tially forward by the spring 20, the full forward movement, past the center line of draft of the spring being effected by the recoil of the gun and the inertia of said block. In its extreme forward position thefiange 17 extends over the tail of the sear 5 and prevents operation of the latter by the involuntary pull on the trigger which is due to a counter recoil from the shoulder. The movement of the block to its extreme forward position carries the connection between the pin 19 and the spring 20 past the central line of draft of the latter, the spring then acting to draw the said block backward. When the involuntary pull occurs the detent block which is then resting on the trigger plate with its flange 17 over the sear 5, is raised, whereupon the spring draws it back, out of engagement with the lug 24 on the sear actuating block, thereby. leaving the sear free to be operated on the next voluntary pull on the trigger. The end of the sear 4 holds the sear actuating block in its rear position until after the first discharge, when the noseof the sear is cammed down by the tumbler of the hammer, throwing the tail end up as in, Fig. 2 and permitting the block to swing forward in response to the action of the spring 20.

What is claimed is z 1. In a fire arm including sears, a sear actuating block arranged to alternately engage said sears, means for actuating said block, and a detent block connected with said 'sear actuating block and arranged to hold one of said sears against actuation at the time the other sear is actuated.

2. In a fire arm including sears, a sear actuating block arranged to alternately engage said sears, means for actuating said block, and a detent block connected With the sear actuating block and arranged for the reception of one 'end of one of said sears while the other of said sears I is being actuated to prevent actuation of the first named sear.

3. In a fire-arm including sears, a sear-actuating block,

, means carried by the block for engagement with the sears to actuate the same, a detent block pivoted to the searactuating block and arranged to hold one of said sears against actuation at the time the other sear is actuated, standard carried by the trigger plate of the fire-arm,

and a spring adjustably connected at one of its ends with the standard and at its opposite end with the detent block above the common plane occupied by the first-named end of the spring and the pivot point of the detent block, said spring being arranged to move the detent block into operative position immediately after one barrel is fired.

4. In a firearm including sears, a sear actuating block, lugs associated with said block and arranged to successively engage said sears, a detent block arranged to engage one of said sears to prevent movement of the same until the other of said sears has been actuated, and means for actuating said sear actuating block.

5. In a fire arm including sears, a sear actuating block including lugs arranged to successively engage said sears, means. for actuating the block, means for shifting the block whereby one of the lugs may be brought into position for actuating one of said sears successively and independently of the other sear, and a detent block arranged to receive the free end of the last named sear to prevent actuation of the same at the time of actuation of the first named sear.

6. 'In a fire arm including sears, a sear actuating block arranged for vertical and for swinging movement, a detent block pivotally connected with the sear actuating block ;and arranged to hold same at times in elevated, position and in inoperative position with respect to one of the sears, and means for swinging the sear actuating block into operative position when the same is lowered, the sear actuating block being operated by the trigger of the gun.

7. In a fire-arm including sears, a sear-actuating block arranged for swinging movement and also for vertical movement, and a detent block pivoted to the sear-actuating block above its pivot point and arranged to move the sear-actuating block out of position to actuate one of the sears during the. recoil of the fire-arm, the distance from the point of pivotal connection of the detent block with the sear-actuating block to the extreme end of the said sear actuating block being less than the distance from the said pivotal point to the extreme end of the detent block.

8. In a fire-arm including sears, a sear-actuating block arranged for pivotal and vertical movement, a detent block pivoted to the sear-actuating block above the pivot of the same and arranged to move the sear-actuating block out of position to actuate one of the sears during the recoil of the firearm, and a positive means for moving the detent block, said means being arranged to retract the block after the recoil.

9 In a fire-arm including sears, a sear-actuating block arranged for pivotal and vertical movement, a detent block pivoted to the sear-actuating block above the pivot of the same and arranged to move the searactuating block out of position to actuate one of the sears during the recoil of the firearm, and a spring for moving the detent block, said spring being arranged to retract the block after the recoil.

In testimony whereof, I affix my signature, in presence of two witnesses.

MICHAEL D. HOGAN.

Witnesses:

CHAS. L. HUTCHINSON, Bmw. A. SMITH. 

